Sign-in failures for `signInWithIdToken` (OIDC) logins on free-tier projects

Summary

Sign-in failures for `signInWithIdToken` (OIDC) logins on free-tier projects

We have confirmed that the fix has been effective and are marking this incident as resolved.

• Started

  Aug 19, 2026 · 12:47 PM

• Resolved

  Aug 19, 2026 · 3:56 PM

• Duration

  3h 9m

• Severity

  Minor

• ◉

  Monitoring

  Aug 19 · 12:47 PM Supabase

  We've identified an issue causing sign-in failures for `signInWithIdToken` (OIDC) logins on free-tier projects. Users authenticating with non-Google/Apple/Firebase OIDC providers may see failed login attempts. We've identified the root cause and fix has been rolled out. Impacted timeframe was 18th August 4pm UTC - 19th Aug 10:30am UTC

• ◉

  Monitoring

  Aug 19 · 12:48 PM Supabase

  We've identified that starting 4pm UTC on August 18th we began seeing sign-in failures with signInWithIdToken (OIDC) logins on free-tier projects.  Users authenticating with OIDC providers other than Google/Apple/Firebase may have seen failed login attempts. We've identified the root cause and fix has been rolled out.

• ◉

  Monitoring

  Aug 19 · 1:01 PM Supabase

  We've identified that starting 4pm UTC on August 18th we began seeing sign-in failures with signInWithIdToken (OIDC) logins on free-tier projects. Users authenticating with OIDC providers other than Google/Apple/Firebase may have seen failed login attempts. We've identified the root cause and fix has been rolled out. We are monitoring for continued stability.

• ✓

  Resolved

  Aug 19 · 3:56 PM Supabase

  We have confirmed that the fix has been effective and are marking this incident as resolved.